Perustiedot
ExciteelektronsormoleculestogenerateConTratedandphase-identicAlightBeamsduringTheconversionIntoenergy.LasercomesFromTheFirstletterOflightAMPlificationBySTStimuloidemissionRadation.sävellys.
ITISCOMPONEFANOPICALSCILLATORADAMEMADIUMPLADEDBETWEENTHEMIRRORSATBOTHDENDSOFTHECAVITEFTHEOSKISTORIAVAAJA.WhenthemediMisexCitedtoAHigh-energyState, ITStarTSToTogenerateLightwavesofTheSAMephasEndreflectBackAndForthBetWeMirrorrorsatbothends, FormingaphoTeelcricicstringJunctioneffect, moniflificathelightWaves, jaBtainingsuctionEngyTyTostArtMinTaSeterlightleerlightledwaves.LasercanalsobeinterprededasadeviceThaTConvertsPrimitiveNergysuchaselcricenergy, kemikaalienergia, lämpö, lightornuclearenergyIncompesific LightFrequences (sähkömagniecradationllightlemsofultravioletlight, visible -wholtorInfraredlight.;.WhenthesemediaareexcitedIntHeformofatomisormolekyylit, neproducelightbeamswithalmentSamephaseandnearlyasinglewelength - Laser.Koska alewelfaseandsinglewelength, thedifferenceangleisverySmall ja thedistancethatcanbetransmitisdisquitebefeweinghighlyconcentrytoprovidefunctionsuchaswelding, cutting and Heat Heatmentment.
Thefirstlaserbeamintheworldwasproducedbyusingaflashbulbtoexciterubycrystalgrainsin1960.DuetothethermalCapecity ofThekrystal, itCanonlyProduceaveryShortPulseBeamwithAverylowfrequency.Vaikka ItistillalowenergyOutput.Theuseofneodymium (nd) astheexciteelementOfYTtriumaluminumgarnetcrystalrods (nd: yag) canproduceacontinuussingle-WaulengthBeamof1-8KW.YAG -laser, aallonpituus 1.06um, CanbeconnectedToteLaserProcessingheadthroughAflexibleOpticalFiber, The EquipeMateLoutOuTledledledled ja OthESiableweldingThicknessis0.5-6 mm.KäyttämälläCo2laser (aallonpituus10.6um) withco2astheexciter, The OutputEnergyCanReach25kw, jaScanMake2mmplaTeThicknesssinglePassfullPenetrationWelding.Ithasbeenwidelyusedintheindustryformetalprocessing.
Mostoftheearlylaserweldingresearchexperimentsusedrubypulsedlasers.VaikkaHigherPulseEnergy on saapui omaan aikaan, theaverageOutputPowersfeselaserswasquiLow, mikä.MääritettyTeffentivedTheExcitability ofTeluminescentMaterial.LaserweldingMainlyUsesco2Lasersandyaglasers.YaglasersHaveBecomethepReferredEquipmentforlaserspotweldingandlaserseamweldingbecusefeReRhighigaveragePower.Theesignicant difference betlaserweldingandelectronbeamweldingisthatlaserradationCannotProducePerforationWelding.Infacti.Fuusio.
Beforethe1970s, koska korkealla voimalla kontinauswaveformLasersHadNotyetBeEnderproved, ResearchFocusedOnPulsedLaserwelding.Mostearlylaserweldingresearchexperimentsusedrubypulsedlasers.TheweldingprocessofyaglasersiscarriedOutbyweldingJoints.AfterthebirthofcontuurpowerwaveformLasersabove1kw, theelallaserseamweldingCanberealisoitu.
IllthesuccessoftheKilowatt-tasonContNousCo2LaserWeldingTest, LaserweldingTechnologyMadeabreakThinTheArly1970s.CO2LASERWELDINGWASCARRIDIBIREUTONALARGETHICKYNTYSTILLessSteelsPecimen, AndapentrationWeldWasform, joka on merkitty.Nämä harhaanvarainen.IntheaerospacedinyandanyOtherSovellukset, laserweldingCanrealizetheconnectionofmanytypesofmaterials, andlaserweldingUSUSHASMANYADVANTAGESTHOTOTHERFUSSIONDROCESTORESCANTONTEATHEAVIANDAUNDAUNDINDERFUSENECNECTHOCESTOWANTONTMATHACHEATHAUNDAUNDAUNDINEDONEDOREALLOUNTOUNTMATHATHEATHEANADAUNDAUNDINDERIINDERIESTHOURESCANTONTEATHEATHEADAUNDAUNDINDERICNESTHORESESCANTONTAMATHA, erityisesti., jaTedeformationFTheComponentsissMall ja.Toinen AttRACTIVEAPPLICATIONOFLASERPROCESSINGISTEUSEOFLASERSTOACHIEVELOCalandSMall-ScaleheatingCharacteristics.ThisHotsPofLasersMakesthemverySasbleForweldingelectronicDevicessuchasPrintedCircuitboards.LaserscanbeUnedInelectronicdevices.AverySmallareaonthedeviceproducesahighaverageTemperature, joka.
ItbelongstofusionWelding, WhatSusclaserBeamasEnergysourceToimpactonTheWeldmentJoint.Thelaserbeamcanbeguidedybyaflatopticalelement (sucasamirror) ja theNenareflektivefocusingelementRlensisusulttoprojectthebeamtheweld.Laserweldingisnon-kontaktiwelding.NopressureisRequiredduringTheOpperation, butinertGasisRequiredToPreventxidationfThemoltenpool.FillermeTaLisOccasionalyadted.LaserweldingCanbecombinedWithMigweldingToformlaser-MighybridweldingToAchievelArgePenetrationWelding, AndatThesametime, TheHeatInputisGreatedrectedR-CCaradWithMigwelding.
Ominaisuudet
FirstOfall, LaserweldingCanReducetheatoNOfhTinputTotheminimum, teematalographicChangergeftheHeat-affectedzoneissmall ja theDedeformationCausedByHeatConductionisalowest.Siinä.AndbecauseitisNotacontactWeldingProcess, TheWearandDeformationFTEquipmentCanbeminimoitu.Thelaserbeamiseasytofocus, alignandbeguidesbyopticalInstruments.ItCanbeplacedatanaPrateratedisanceFromTheWorkpiece ja CanBeguideBetBetWeEnToolSorOBStaclesaroundTheWorkPebere.MuuWeldingMethodScannotbeUneddueToTheabove-MagneedSpacelimitions..Toiseksi, The WorkPeeCecanBePlatedinacledSpace (ImurodortheinternalgasenVironmentSunderControl).Thelaserbeamcanbefocusedonmallarea, canweldsmallandcloselySpacedparts, canweldawiderangeofmateriaalit, andcanalsojoinvariorheterogeneousmateriaalit.INDADDION, ITISEASYTOAUTOMATEHIGH-SPEEDWELDING, JAITCANALSOBECONTROLLEDBYDIGIALORCOMPUTER.WhenweldingThinMaterialSorthin-halkaisijawires, ITisNOTASEASYTOBETROUBLEDASARCWELDING.
Edut
(1) The HeatInputCanberedcedTotheminimumRequiredamount, teematalographicChangergeOftheHeat-Affectedzoneissmall ja theDedeformationCausedByHeatConductionisoSothelowest.
".
(3)Siinä.AndbecauseitisNotacontactWeldingProcess, TheWearandDeformationFTEquipmentCanbeminimoitu.
(4)Thelaserbeamiseasytofocus, alignandbeguidesbyopticalInstruments,canbeplacedatanappropriatedistancefromtheworkpiece,andcanbere-guidedbetweentoolsorobstaclesaroundtheworkpiece,otherweldingThelawcannotbeexertedduetotheabove-mentionedspaceconstraints.
(5) The WorkPeeCecanBePlacedinacledSpace (Ala -VvacuumorinternalGasenVironmentUndUndSontrol).
(6) ThelaserbeamcanbefocusedonmAllareaandCanweldsMallandcloselySpacedparts.
(7) TherangeOfweldableMaterialSiswide, jaTeycanalsObejoeweAchothero.AllKindsofheterogeneousemateriaalit.
(8) iTiseasytoAutomateHigh-Speedwelding, jaSitcanalsObeControlledByDigitalorComputer.
(9) WhenweldingThinmaterialsorthin-halkaisijaltaan, itwillnotbeassyTobetroplesomeasarcwelding.
(Kymmenen.
(11) TwometalswithdifferentPhysicalProperties (SuchasDifferentresistances) Canbelded
(12) Novacuumorx-rayprotectionisRequired.
(13)
(14) thedeevicecanbeswitchedtotransmitHelaserbeamTomultipleworkStations.
Prosessiparametrit
ProcessParametersOfConTinousCo2LaserWelding
Paksuus/mm | Hitsauspeite/(cm/s) | Saumanleveys/mm | Kuvasuhde | Voima/kW | |
Buttweld | |||||
321Stainlesssteel (1CR18NI9TI) | 0.13 | 3.81 | 0.45 | Täydennys | 5 |
0.25 | 1.48 | 0.71 | Täydennys | 5 | |
0.42 | 0.47 | 0.76 | Osittainen tunkeutuminen | 55 | |
17-7 Stainlesssteel (0CR7NI7A1) | 0.13 | 4.65 | 0.45 | Täydennys | 5 |
302Stainlesssteel (1CR18NI9) | 0.13 | 2.12 | 0.50 | Täydennys | 5 |
0.20 | 1.27 | 0.50 | Täydennys | 5 | |
0.25 | 0.42 | 1.00 | Täydennys | 5 | |
6.35 | 2.14 | 0.80 | 7 | 3.5 | |
8.9 | 1.27 | 1.00 | 3 | 8 | |
12.7 | 0.42 | 1.00 | 5 | 20 | |
20.3 | 21.1 | 1.00 | 5 | 20 | |
6.35 | 8.47 | - | 3.5 | 16 | |
Inconelalloy600 | 0.10 | 6.35 | 0.25 | Täydennys | 5 |
0.25 | 1.69 | 0.45 | Täydennys | 5 | |
Nickelalloy200 | 0.13 | 1.48 | 0.45 | Täydennys | 5 td> |
Monel 400 | 0.25 td> | 0.60 | 0.60 | Täydennys | p>5 |
Industrialpuretanium | 0.13 | 5.92 | 0.38 | Täydennys | 5 td> |
0.25 | 2.12 | 0.55 | Täydennys | 5 | |
Leuto teräs | 1.19 | 0.32 | - | 0.63 | 0.65 |
Lapweld | |||||
Tinapinnoitettu teräs | 0.30 | 0.85 | 0.76 | Täydennys | 5 |
302Stainlesssteel (1CR18NI9) | 0.40 | 7.45 | 0.76 | Osittainen tunkeutuminen | 5 |
0.76 | 1.27 | 0.60 | Osittainen tunkeutuminen | 5 | |
0.25 | 0.60 | 0.60 | Täydennys | 5 | |
Fileethwelding | |||||
321Stainlesssteel (1CR18NI9TI) | 0.25 | 0.85 | - | - | 5 |
Terminaali | |||||
321Stainlesssteel (1CR18NI9TI) | 0.13 | 3.60 | - | - | 5 |
0.25 | 1.06 | - | - | 5 | |
0.42 | 1.90 | - | - | 5 | |
17-7 Stainlesssteel (0CR17NI7A1) | 0.13 | 3.60 | - | - | 5 |
Inconel 600 | 0.10 | 1.06 | - | p>- | 5 |
0.25 | 0.60 | - | - | 5 | |
0.42 | 0.76 | - | - | 5 | |
Nickelalloy200 | 0.18 | 1.06 | - | - | 5 |
Monel 400 | 0.25 |
ThemainProcessParametersOfLaserDeePentrationWelding
Laservoima
Seisalaserenergydensitythresholdinlaserwelding.Alla tämä arvonlisävero,.OncethisvalueSreachEdorexexted, thePenetrationDepthWillbeGreatly.Ainoa milloin.UnthelaserPowerisLowthanThisthreshold, JustSurfacemeltingOftReworkcecurs, Thatis, WeldingisperformedInASTableMeralChactivityType.WhenthelaserpowerdensityisnearThecriticalConditionForthformations fsmallhole, syvänpenturiteettiWeldingandConductionWeldingalpernateersbecomeanStableWeldingProcess, tuloksena oleva.LaserDeepenetrationWeldingin aikana, ThelaserPowerControlsthePenetrationDepthandweldingspeedatthesametime.TheweldingpenetrationisdirectlyRelatedTobeampowerdensity, andisAfunctionFIstBEntBeamPowerandtheBeamfocalspot.Yleisesti ottaen, foralaserbeamwithaciferidiameter, thePenetrationDepthincreaseSastheBeamPowerscreals.
Beamfocalspot
BeamsposizeisONOFTHEMOSTIMPORANTVARIABLESINLASERWELDING, koska.Butforhigh-PowerLasers, sen mittaustutkimuksenhoitoproblem, vaikkakinRaEnEndirectMeasurementTechniques.
Thediffraction-rajoitetut kohdistuvat virranfocuscanbecalculculoccordingtothetheyoflightdiffraction, butdueToTheaberrationfocusinglens, thactualspotislargerthanthecalculculdewhens.ThesimplestactUnMeasurementMethodisTheisotermalprofilemethod, joka on interneaseTefocalsPotandperforationDiaMeterAftersCorchingThickPaperAndPenetratethePolyPropyleneplate.TämäMethodshouldBePracticedThroughMeasurementToMasterTeesizeOftHelaserPowerAntHetTimeOfBeamAction.
Materiaali
TheabsorptionoflaserlightbyamaterialDipenSonsomeSIMPORTANTPROPERTIES OFTHEMATERIAL, SOWASABSORPTIVISIO, Heijastavuus, Lämpöjohtavuus, Multingemperature, Höyrystymistemperatuuri jne.., joukossa merkitys.
ThefactorsAffectingThAbsorptingfathtHelaserBeaminincludTetWoaspects: TheFirstisheresisticyfTheMaterial -.Jälkikäsittely,., Ja andtheresisticyChanges kanssa.
The OutputwavelengthOfco2LaserisUsus10.6 um.TheabsorptionRatefceramics, lasi, kumi, plasticsandothernon-metalsisveryHighatroomTemperature, kun., TalletematerialMeltsandevenVaporisoi.ThemethodOfusingsurfacecootionorgeneratingoxidefilmonthesurfaceSveryeffecInNInProongThistRabsorption kanssa.
Hitsauspeite
HitsauspeitehasagreaInfluenceonpentration.Kasvavahuolto,.Siksi seisasableweldingspeedRangeforacetlaserpowerandAcethicknessOfacetMaterial and theMaximumPenetrationDepthcanbeobTatedatthecorrespontspeedValue.
Suojaa
ThelaserweldingprocessoftenusesInertgastoprotectthemoltenpool.WhenSomEMaterialSarewelded, thesurfaceoxidationMaynotBeconsided, ButtheprotectionMaynotBeconsided, ButForMostPlicationsGasessUchashelium, Argon ja NitrogeneOxTenusedForprotectionToPReTheworkPeecefrombeingoxidedDurnYweldingProcess.
Heliumisnoteasyionionis (lukionisaatioEnergy), joka on millainen.TämäAsThemostEffectivesHieldingGasutedInLaserWelding, ButitismoreExParping.
Argonischeaperanddenser, sotheprotectioneffectisbetter.Kuitenkin itissusceptibletoHigh-temperaturemetaalplasmaionisaatio, joka on kuitenkin saanut aikaan palkkiohäiriöt, vähentävänReachinghEweffeffeveLaserPowerwelding, ja iskuvaamagestheweldingspeedPenetrations.ThesurfaceOftheweldmentprotedbyargonissmootherthanwhencretedbyHelium.
NitrogenisthECHESTHIELDingGas, butisNoTsutsiableforweldingCanetypesofStainlesssteel, pääasiassa dueetometallurgicalproblems, sucasabsorptio, mikä.
ThesecondfunctionofusingsHieldingGasistoprotectThefocusingLensFrommetalVaporContaminationAdLiquiddropletSsplashing.Erityisesti.
THETHIRDFUNCTIONFTHTHESTIEDINGGASISISTODISSIPATTETHEPLASMASHIELDING-tuotetulla tavalla.TeemetalvaporabsorbsthelaserbeamannionizesIntoaplasmacloud jaHeHieldingGasaroundTheMetalvaporisalsozedbyHeating.IftheristoomUchplasma, ThelaserBeamiscondedbyTheplasmatosomexent.Plasmaexistsasthesecondkindofenergyontheworkingsurface, jokaMakesthepentrationDepThBecomeshallowerandheweldpoolsurfacebecomeswider.AddheteelectRonRecombinationRatebyincreasingthethree-bodycollisionofelektronit.ThelightertheneutralatoM, korkeakoulututkinto ja heheilevä.Ontherhand, vainhimoinen.
Atomic (molekyyli) painontallionisaatioEnergyOfCommonlyPaass andmetals
Materiaalihelium, argoni, typpi, alumiini, magnesium, rauta
Atomi (molekyyli) paino44028272456
Ionisaatioenergia (EV) 24.4615.6814.55.967.617.83
THEESTEFTHEPLASMACLOUDVAIRESTIAVATTOMAAVAAJAUTTAMISEKSI.Heliumisthesmallestandnitrogensecond, Thelarfrestwenusingargon.Thelargertheplasmasize, theshallowerthepentrationDepth.ThereasonForthisDifferenceSfirstLyDuetedifferenceIntheDegreeofionisationofGasmolecules -.
HeliumhasthesMalleSionationdthesmallestDensity.ITCANQUICKYDRIVEOUTTheringMeTalVaporTenerated fromthemoltenmetalpool.Siksi käyttämälläHeliumasashieldinggascansuppressTheplasmatothEgreTESTEXTENT -sovellusta, siten lisäämäänThePenetrationDepthandIncreasingTheweldingspeed;.Tietysti, tuomarin perusteella.
TheinfluenceofplasmacloudonpentrationismostObViousinthelowweldingspeedarea.Whentheweldingspeedincreases,itsinfluencewillbeweakened.
TheshieldingGasisisejecthrangHenozleopeningATACUREPressPressetoreachTheSurfaceOftHeworkpiece.TheHydrodyNAMicShapeftHenozzleandthediaMeterOftheOutletEveryvert -.ITmustbelargeenughtodrivethesprayedshieldingGatocovertheweldingsurface, butInorderToEffectivepRotEctTheLensandPreventMettalVaporContaminationormetalSplashfromdamagingthelens.Flowrateshouldalsobecontrolled, muun wisetelaminarflowftheshieldinggaswillbecometurbulent ja theatmospherewillbedRawnentothemoltenpoolandeEventuteformorpores.
Inordertoimprojeteprotectioneffect, anadditionalsideblowingmethodcanbeused, thatis, theshieldingGasisdirectYinjectedIntetepePenetrationweldingholeacetwartyangletRoughAMallerDiameternOzzain.TheshieldingGasnoTOnlysuppressestheplasmacloudonthesurfaceOftHeworkSheplasmacloudonthesurfaceOfthewoort, butaatiosaninfluenceontHeformationofplasmadsmallholesintheHole- ja thepenetrationDepthisfurtherscendred, jaweldwithanidealDepthandwidthisolled.TämäMethodRequiresPRECISECONTROLOFTHESIZEANIDDIRECTIONFTHEAIRFLOW, MUKAISESTIESTEEASTOPRODUCEURBULENTFLOWANDADESTORYTHEMOLTENPOOLPOOL, MEKÄRJESTELMÄTTEENPROCESSDIFICHICORYABILESIA.
Linssikolmio
Kun welding, focusSusususaltunedToconverGethelaser.Yleensä alenswithAfoCallengthOf63 ~ 254 mm (2.5 ”~ 10”) käytetään.ThefocalspotiSizeisProportionaltothEfocallength, theshortertHefocallength, thesmallerthespot.Kuitenkin focallengthaloaffectsthefocaldepth, se, että focaldepthincreasessynkronisesti kanssa.DueToTheinfluenceOfSPatterandLasermodedingWelding, TheshortestFocaldepthusedinactualWeldingismostlyFoCallength126mm (5 ").Whentheseamislargeorthespotsizeneedstobeincleadtoincreasetheweldseam, choosealenswithAfocallenthof254mm (10 ").InTHiscase, InordertoAchievetedepePenetrationPinHoleEffect, AhigherLaserOutputPower (PowerDensity) Isrequired.
Whenthelaserpowerexceeds2kW,especiallyforthe10.6 umCO2laserbeam,duetotheuseofspecialopticalmaterialstoformtheopticalsystem,inordertoavoidtheriskofopticaldamagetothefocusinglens,thereflectivefocusingmethodisoftenused.Apoledcoppermirrorisusedasareflektor.Koska itisoftenRecomedforhigh-PowerLaserBeamFocusing.
Painopiste
Kun welding, inordertoMainainsuctionalpowerdensity, focusPositionalSICONTert.ThechangeoftherelativePositionfocusandTheSurfaceOftheworkPeeceDirectlyAffectsTheWidtHandDepthoftheweld.
InfuldlaserWeldingSovellukset, TheFocalPointSUSUSSETATABOUT1/4OFTEFTIREDPENETRATIONDEPTHBELOWTHESURFACEOFTREWORCOREPEED.
Laserbeampositio
WhoLaserWeldingDifferentMaterials, ThelaserBeamPositionControlSTheFinalQualityOftheweld, erityisesti.FESTEXAMPAY, WINAHARDENEDSTEELGEARISWELDEDEALOW-CARBONSTEELDRUM, TECRECRECTCONTROLOFTHEELASERBEAMPOINTIONTOWWillHELPTOPRODUCEAWELDMAINYCOMPONPONEFLOFLOW-HARBONCONPONTENTS, WHOHASBETTERCRACKRESENANCE.InsomSovellukset, thegeometria.WhenthedeflectionglebetweenthebeamaxisandtheJointPlaneisWithin100Degrees, TheWorkpiece '.
PowerControl
ThelaserpoweratThestAndendPointSoftheweldingisgradalycrovedDdedrached.
LaserDeepenetrationWelding, Nomatterthedepthoftheweld, SmalltHolefenomenonalwaysexistit.WhentheweldingProcessisterMinedandThePowerswitchorurnedoff, PitswillappearattheEndOftheweld.Adddition, WhenthelaserWeldingLayercoversTheoriginalweld, LiikeVeabsorptionOfThelaserBeamwilloccur, aiheuttaen.
InorderToPReventTheACurrance OFTHEABOVEPHENOMENON, ThePoWerStarTAndenDenDPointScanBePRAGRAMMEDTOMAKETHEPOWERSTARTALEDENDIMEADABLE -.SetThePowervalueanDadJustTheWeldingtime.Lopuksi, Whenthoweldingisterminuted, thepowerisgradscrexedfromthesetPowertzero.
Hyödyt ja haitat
(1) THEWEWELDmentMustbeveryPreciseandmustbewithinthefocusRangeOfThelaserBeam.
(2) WhenttheweldmentNeedstouseajig, se ei.
(3) tHeraximumpladablethicknessisRestToPenetRateTeworkPeecewithathicknessfarexceeding19mm, jalaserweldingisNoTSuctHESTEPRODUCTIONLINE.
4.
(5) Kun persovitusmediumtoHighenergyLaserbeamwelding, aplasmacaontrollermustbeuledTodriveouttheionisedGasaroundthemoltenpooltoensuretherEaPeearanceOftheweldbead.
(6) TheEnergyConversionEfficenciationistOolow, yleensä ilman 10%.
(7) The WeldBeadSolidifiesRapidly, jaTheRemayBeconCernSaboutporosityandembritlement.
(8) TheEquipmentisexParde.
Inordertoeliminateorreducethedefectsoflaserweldingandmakebetteruseofthisexcellentweldingmethod,someotherheatsourceandlaserhybridweldingprocesseshavebeenproposed,mainlylaserandarc,laserandplasmaArc,laserandinductionheatsourcehybridwelding,duallaserbeamweldingandmulti-beamlaserwelding,etc.Tarvitteet, erilaiset.
(1) Powerdensity.PowerdensityisOnefThemoscriticalParametersinLaserProcessing.WithAHigherPowerdensity, thesurfacelayercanbeheatedtotheboilingpointwithinamicrosecondtimerange, tuloksena oleva.Siksi korkea voimansiteettibeneficialFormaterialRemovalprocessing, SISESPUNCHING, leikkaus ja andengraving.Forlowerpowerdensities, ItakesseveralMillisecondsforthesurfaceTemperAturetOreachTheBoingPoint.BeforethesurfacelayerVaporisoi, thebottomlayerreachestHemeltingPoint, joka on.Siksi syttyvistä.
(2) laserpulsewaveform.ThelaserPulsewaveFormisanImportanTissueInlaserWelding, erityisesti ForsheeTwelding.Wanahigh-intensityLaserbeamhitsthesurfaceofTheematerial, 60 ~ 98%of theLaserenergywillBerefltedandlostonthemeLsurface ja.Allaserpulsen aikana, sen flektiviteettiä.
(3) laserpulseleveys.PulsewidThisOneftHertantParametersOfPulSelaserWelding.ITISNOTONLYNIMPANTPARAMETER DIFFERENTFROMATERIALREMOVALANDMATERIALMELTING, BUTLEAKEYPARAMETTIEDETERMINESTHECOSTANDVOLUMUEFPROCESTIVIPAPPAINT.
(4) TheFeekefdefocusingamountonWeldingQuality.LaserweldingUSUSTICHIRESACUTEGREEOFSEPAATION, BECAUSEETEPOWERDENSIINTIINTHECENTEROFTHESPOTTHELASERFOCALPOTTOOHIGHANANDITEESTEEVAPOTAPATIONOAHOLELEE.OnAeachPlaneawayFromthelaserFocus, ThePowerDensityDistributionisrelatiivisesti.ThereareTwodefocusingMethods: positivefocusandnegativeDefocus.Ifthefocalplaneisaboveteworkpiece, iTisaPosiveDefocus, muuten vastakohtainen.AIKAISESTIMETRICOPTICSTHEYORIA,.Whenthedefocusisnegative, agreaterpenetrationDepthcanbeobnated, joka.KokeilunshowTatthematerialStartsTomeltwentHelaserisHeatedfor50 ~ 200us.Atthesametime, theHighcentrationofvaporcausestHeliquidmetalTomoveToThEdgeofthemoltenpool.Whenthedefocusisnegative,theinternalpowerdensityofthematerialishigherthanthatofthesurface,anditiseasytoformstrongermeltingandvaporization,sothatthelightenergycanbetransmittedtothedeeperpartofthematerial.Siksi inpracticalSovellukset, WhenthepentrationDepThisRequiredTobelarge, sen jälkeen.
Soveltaminen
LaserweldingMachineTEchnologyAswidelyYinhigh-tarkkuusvalmistuskentät...
Erityisesti...TentHecontuleconsolidationftheglobalbrandstatusofwashingmachines.Kuitenkin itwillalsohaveadEreReformOftHOMAPPLANCEDIADIADIADIA.AccordingtoHaier'sR&Dpersonnel,mostofthemanufacturingtechnologyoftheinnertuboffullyautomaticwashingmachinesonthemarketadopts"snap-and-loop"technology.Siten.InorderTofurtherimproVealeLiabilityandRefinementfinertub, haierwashingmachinetakestheautobileandshipbuildingindustriesasthereferencebase, andApplieshelaserserseamlessWeldingTechnologyTheNewuniformpowerWashingMachine, välttää.ImproductWhiletakingCareOfTheclothes.DueToTheincreaseinthestrengthOftheinnertub, theaximumpeedOftheOnformpowerwashingMachinedsHedeDydrationProcessisalsOnCrodedby25%verrattuna.
INDADDION, IALSOLARDEDTOT "SuuritehoisenLaserweldingMachineTechnology" yhdessä kehitettyjen ja saksalaisten jauhun aloittamisen aiheuttaman kehyssuojauksen ja sisältävät alueet;.Atthesametime, thelaserseamlessweldingtechnologyofaluminumalloyfuselagecanreplacerivetts, siten vähentäenThefuselageby20%; Kiinan shigh-speedrailtrackhasalsointrodlaserseamlesswelding.Teknologia, vaikkakin.
Illteal-round-kehityskehitysscienceandtechnology, thecontIntyconsolidationAdpicationOfLaserweldingMachineTEchnologyHasalsoledtheglobalhomApplianceDoryIntoaneweraA.SillowprocessisnotOnlyanupgradeofproducts, butalsomoreTechnologyDisplayandSoveltaminen.
1.Valmistuksen alan sovellus.Myöhennysten mukaan IN 200000, seweremorethan100lasertailedweldingproductionlinesforcuttingblankSworldwide, withanannualoutputthereare70Milliontailor-weldedblanksforcarcomponents, anditcontinuestogrowatarelatiivisesti.THEDOMESTIED -tuotetut mittausmodelspassat, Buick, Audi jne.alsousesomecutblankStructuurs.JapanusSCO2LaserWeldinginsteadOffLashbuttweldingForthEconnectionOfRolledSteelCoilsinTeelinaloteollisuus.Intheresearchofultra-thinplatewelding, sucasfoilswithathicknessoflessThan100Microns, he voivat.Thesuccessofyaglaserweldingshowshebrightfutureoflaserwelding.JapanhasalsosuccessfuldedheuseOfyaglaserWeldingForthMainfulancefStEmGeneratorThIntinnuclearReactorsFortHefirstTimeInTheWorld.Inchina, subaorongandothershavealSocarriedutlaserweldingTechnologyforgears.
2.ThefieldofpowdermetallurgywithtHthectuentdevelopmentOfscienceandtechnology, monenointSechnologieshaveSespecialRequirementsFormations, andMaterialSmadeBysmeltingAndcastingMethodSannolongermeetTheneds.BacausepowdermetallurgyaterialshaveSpecialPropertiesandManufacturingAdvantages, heArerePlacingTraditionalsMeltingMaterialSindFieldSsuchasautoMobiles, lentokoneet, jatoolandcuttingToolManfacturing.Kasvattavan kehityksen kanssa,.Vaikuttaa siltä,.Intheearly1980s,laserweldingenteredthefieldofpowdermetallurgymaterialprocessingwithitsuniqueadvantages,openingupnewprospectsfortheapplicationofpowdermetallurgymaterials,suchastheuseofbrazingmethodscommonlyusedinpowdermetallurgyLowstrength,wideheat-affectedzone,especiallyincapableofadaptingtohightemperatureandhighstrengthrequirements,causingthesoldertomeltandfalloff.TheuseoflaserweldingCanimproVetheweldingstrengthandHightemperaturheresance.
3.AutomobileIntryInthelate1980s, Kilowatt-levellasersweresuccessfulypliedToDoRialProduction.Nykyään laserweldingproductionLineshaveemergedfrommodernautoMobileMaufacturingonalargesCaleandbeNeONEONECHACHIEVESTENTSOFAUTOMOBILEMANPACUNCORNACONTORIA.EuropeanAutoMobilemanvalfacturersuchasaudi, Mercedes-Benz, Volkswagen, ja volvoofswedenTooktHeleadinadoptinglaserweldingForroof, Body, SideFramesandothersHeeTmetalweldingasEaSasthe1980s.1990 -luvulla, GM, FordandchryslerCompedintheUnitedstses.TheintroDuctionoflaserWeldingIntoAutoObileManufacturing, Huolimatta.ItalianfiatustusLaserWeldingintheweldingAndAssemblyFelstSteelPlatecomponents.Japan'snissan, Honda, AndtoyotamotorcorporationuselaserweldingandcuttingProcessEnthemansucturefUnBody -.Korkean lujuudentillaserWeldingAssemblypartsaredueToTheirexCellEnterformance.ITISUDUDMOREANDMOREINAUTOMOBILEBODYMANFACTORNA.Mukana, jotka ovat OFTHESTATISTIST,.Mukana,.Intermofteknologia, SandianationAllaboratoryOftheUnitedStateSandprattwitneyHaveJoindlyConductedResearchonaddingPowderMetaLandMeTalWireInThelaserWeldingProcess.TheinstituteofApiedBeamTechnologyInbremen, GermanyhasconductedeDalofresearchontheuseOflaserweldingofaluminumalloybodyframeframes.ITISBELIEvedThataddingfillerresiduesIntheweldwillhelpeliminatHotcracks, lisääntymistehokka.Editekniikkaprofiili.
4.ElectronicsIndustryLaserWeldingHasbeenWidelyPuleInTheelektroniikkateollisuus, erityisesti inthemikroelektroniikkateollisuus.DueTothesmallheat-SpachedzoneofLaserwelding, The HeatingConcentrationisRapidandThermalstressislow.Siksi itisshowingUniqueadvantagesInthePackagingofIntegratedCircuitsandsemiconductOrdeviceshells.IntSheDevelopmentOfVacuumdevices, LaserweldingHasalsobeenAppled, sellainenMolybdeNumfocusingelektrodeandstainlesssteelsupportring, fasthotcathodefilamentSembly jne..THEEELATICTTHIN-seinämäkorrugoituaSheetInthesensorortherMOSTATIS0.05-0.1 mm, joka on difficultoosolvebytraditionalweldingmethods.Tigweldingiseasytoweldthrough, PlasmasAnibilitySoor ja.Thelaserweldingeffectisverygood, ja tullessa käytetty.Sovellukset.
5.LaserweldingofbiomedicalbiologicalTissuesbeganinthe1970 -luvut.Klinketetal.AndJain [13] käytettyjälaserweldingtoweldfallopiantUbesandbloodVesselselsuccesslyddemstratedsuperiority, millainen.Theresearchonlaserweldingnerveathomeandabroadmainlyfocussonthelaserwavelength, doseanditsfunctionRecoveryandTheSelectionOfLasersalder.OnTheBasisofBasicresearchonlaserWeldingofsmallbloodVesselsandskinthEcommonbleductOftheratwelded.Verrattuna.ItwillbeUnedInfuturebiomedicine.GetAwiderRangeofaplikaatiot.
6.Muut kentät.Inotihuiteet, Laserweldingisalsogradalycensioning, erityisesti InspecialMaterialSwelding.Monenvakkainen hakuvalvontakarva, SuchaslaserWeldingofbt20 Titanium-seos, HEL30lloy, Li-ion-akku jne., BermanglassMachineryMafacturerglamacosocoswigandifwjinTechnologyandMaterialsexperimentalResearchinstituteHaveDevelopeDanewLaserWeldingTechnologyforflatGlass.
Edut
LaserhybridweldingTechnologyHassignificantAdvantages.Forlasermisixing, theadvantagesaremainLyRefltedIdoday's: suurempi pentration/suurempiGapweldrability; parempana;.ForthehybridlasermigInertGassHieldedwelding, theadvantagesaremainLyReflektedIdoday's: HighHitsauspeite; LargefusionWeldingDepth; LessWeldingHeatRegenerated; Highweldstrength; SmallWeldwidth; SmallweldProtrusion.Siten TheProductionProcessOfthewHolesystemisStableandTheEquipmentAVAILESGood;.
AIMINVESTTINGCOSTOFLASERHYBRIDWELDINGIINPOWEREQUIPISTISRELIAtiivisesti kuitenkin.IllthefurthexpansionofThemarket, ThePriceOfPowerequipmentWillalsodrop, jaLaserhybridweldingTechnologyWillBapiedInmorefields.ALEVASTTHELASERHYBRIDWELDINGTECHNOLOGYISAVERYSSUTEABLEWELDINGPROCESSINTHEWELDINGOFALUMINUMALLEYMATERIAALIT, JAKSI.
Kehitysvuoro
UlkomaalaistaLasertNologyandManufacturingArerelatective -kehittynyt.He heHavealReadyBeguntostudyHowToApplyModernlasertECHNOGYTOTRADIONALMANAFACTUNTEAREALLYSTHE1980 -luvut.Westerncountriessuchastheeuropeanunion, The OnitedStates, ja jajapaninasiarelelyonTheirownSevelopedScientificificandTechnologyStrengthAndagoodManufacturingfoundation, Ala -Ala -Ala -AikakaupatGuidanceandfinancialSupportOftheGovernment, erityisesti kehityskehyste.TheSoveltaminenOfLaserWeldingTechnologyCanbeseninmanyManufacturing andotherIntrycries, mukaan lukien theelektroniikkateollisuus, laivanrakennusteollisuus, autoteollisuus jne.., andtheaplicationFernLaserWeldingTechnologyCanbeseen.Ja teollisuusstandardifweldingTechnologyHasbeensPreliminyforned, SothaTitCanbeaPliedInareableAbleDControllablerange.Atthesametime, inordertofurtherimproveweldingeffenticivenaDableLaserWeldingTechnologyTobebetterAppliedTomodernLarge-Scalproduction, erityisesti Large-ScaleManufacturing jaConcontructionustries.TheresearchofpowerlasersfurtherpromotesandrealizestherealationFhigh-PowerLaserweldingTechnology, thriculyeclyingitTaLarge-Scalenvalturing, rakentaminen ja.
Vuonna 2016, TheHarbinweldingResearchinstitutewastheleaderInlaserWeldingTechnologyResearchinchina.Sisäänrakennukset, inddditionTofurtherbroadeningandDevelopingNewTypesOflaserWeldingandEquipment, Itislesoaktiivisesti aloittaen jaetus-.ThelatestresearchresultsshowtHatheysuccesslyoversCometheweldingProblemsOfdomClarge-ScaleComponents.Adddition, thedomesticlaserweldingTechnologyResearchin2016wasalsoconTritedIntheFieldSoflaserhotwirewelding, dissimilarmetalwelding jne.., millainen.AndforeignCountriesHavemadeBreakthroughSInRelatedResearch -kentät, erityisesti keräysajohasinitiaalisesti päällystetty.Inthefuture, meidänCountryMustBetrulyProficityinthSoveltaminenAndMasteryofLaserWeldingTechnology, andEpplyittomoreFieldSandTheIntian teollisuus, ITISUNDOUBTEDLYNEYYYYYTOOVERCOMETHEAVE-NAINTILEDISSUREDTOFURTHERIMPROVANDOPTIMIZETHELESERWELDINGTECHNOLOGY.
Näkymät
LaserweldingisAcombinationofmodernTechnologyandTraditionalTechnology.Verrattu., CangreatileproveTheEffenticyAndAccuracyOfding.ITHIGHOWERDENSITEDACEDASTEGERYRELEAECANBETTERIMPROVEWORKEFICE.ATTHESAMETIME, ITOWNFOCUSPOINESMALLER, joka on epävarma.TheemergenceoflaserWeldingTechnologyHasrealizedTheFieldSTraditionalWeldingTechnologyCannotapply.ITCANSIMPLYACHIEVARIONWELDINGREQUIRESSFIFERENTEMATERIALS, METALSIADNON-METALS, JA ITCANBEBEADONTHETRACTYOFTHEGREESFORESELDOUDOUDOBEDONDYHONDYHONDYHINGEDOUNDOUNDOUNDYHONDYHONDYHONDYHONDYHONDYHONDYHONDYHONDYLYYHMANDOUNDOUNDOUNDOUNDONESFESFESSYYSYYYS.Turhinko, becauselaserweldingcanreleasealargeatofhheatinashortPeriodoftimetoachieverapidwelding, ithaslowerenvironyLRequirementsandCanbePerfornedunderyaleralTemperatureconditions, ilman sitä.Jälkikohtainen kehitys, ihmisetHavethehighestlevelofunderningingandRecognitionoflasertechnology, andithasgradgualianfedfromtheinitialMilitarifieldTothemodernCivilianfield ja theemergenceofLaserWeldingTechnologychnologychnologychnologychnologychnologychnologychnologia.IntHefuture, LaserweldingTechnologyCannotonlyBeUnedInfieldSsuchasautoMobiles-, teräs-, andInstrument -valmistusvalmistus, butoin -sotilas-, lääketieteelliset ja muutkentät, erityisesti.ThecharacteristicsOfIntegrationandhygienecanbebetterappledInclinicalDiagnosisAndtreatsuchasneuromedicinEndrepRodeMedicine.AnditOwnPrecisionAdvantagesWillalsObAPliedInMorePrecisionInStrumentNanufacturingInsustries, jotkaWillContinueTobenefitTheDevelopmentOfMankandSociety.
